Kinematics and time of emplacement of the Upper Allochthon of the Rhodope Metamorphic Complex: evidence from the Rila Mountains, Bulgaria

Variscan ultra‐high‐pressure eclogite in the Upper Allochthon of the Rhodope Metamorphic Complex (Bulgaria)

“…Ultra‐high‐pressure metamorphism of eclogite in the Ograzhden Unit has now been demonstrated at three localities, Gega (Zidarov et al., 1995; coesite), Obidim (~3 GPa/700–750°C; Janák et al., 2011) and Belica (3.0–3.5 GPa/700–750°C; this study). The Variscan Orogeny in the Balkan Peninsula comprised the northward subduction of the Rheic Ocean, separating the Sredna Gora Terrane (of which the Ograzhden unit was a part, see Gorinova et al., 2019) from the Balkan Terrane (Figure 1; Carrigan et al., 2005; Haydoutov, 1989; Haydoutov & Yanev, 1997; Plissart et al., 2017).…”

Tectonic units of the Alpine collision zone between Eastern Alps and western Turkey

“…We included the following units into the Rhodope middle unit (see Fig. 10 for the locations of these units): Variegated series found rimming dome-like structures in the northwestern part of the Rhodope lower unit in the Pirin Mountains (Georgiev et al, 2010), the Mesta and Slashten sub-units located southeast of the Pirin Mountains (Sarov et al, 2008;Froitzheim et al, 2014), the Malyovitsa sub-unit in the area upstream from Rila monastery (Gorinova et al, 2019), the Chepelare shear zone (Petrik et al, 2016a), the Starcevo and Borovitsa sub-units (Pleuger et al, 2011), and finally, the Krumovitsa and Kimi sub-units in southeastern Bulgaria and adjacent Greece rimming the Kesebir-Kardamos dome (Mposkos and Krohe, 2006;Bonev and Stampfli, 2011;Georgiev et al, 2016;Moulas et al, 2017).…”

“…The Rhodope upper unit comprises the following subunits (see Fig. 10 for the locations of these units): the Kerdilion subunit in the footwall of the Kerdilion detachment (Brun and Sokoutis, 2007), the Sarnitsa sub-unit east of the Mesta Graben (Georgiev et al, 2010), the Troskovo (Zagorchev, 2001 and Kabul (Gorinova et al, 2019) sub-units downstream from Rila Monastery, the Crnook-Osogovo-Lisets core complex (Anti c et al, 2016), the Chepinska sub-unit (Naydenov et al, 2013), the Madan sub-unit, including the Bachkovo-Dobralak metamorphics (Raeva and Cherneva, 2009;Naydenov et al, 2006), and finally, the Borovitsa sub-unit (Pleuger et al, 2011).…”

Timing of pegmatite emplacement and skarn formation in the Malyovitsa Unit, NW Rila: evidence from zonal grossular crystals

“…Lithologically, the Malyovitsa Unit consists of biotite and amphibole-biotite paragneisses, mica schists, marbles as well as lenses of metaultrabasites. The lower parts of the unit are built by orthogneisses (Gorinova et al, 2019). The metamorphic sequence is intruded by the granodiorites to granites of the Rila-West Rhodope Batholith (RWRB) with different time of formation (von Quadt, Peytcheva 2005;Peytcheva et al, 2007;Gorinova et al, 2019), forming characteristic intrusive contacts.…”

“…The lower parts of the unit are built by orthogneisses (Gorinova et al, 2019). The metamorphic sequence is intruded by the granodiorites to granites of the Rila-West Rhodope Batholith (RWRB) with different time of formation (von Quadt, Peytcheva 2005;Peytcheva et al, 2007;Gorinova et al, 2019), forming characteristic intrusive contacts. Marble lenses and layers form a NW-SE elongated strip cropping out in the studied area.…”